Year	Total
1971	770100000
1972	1049000000
1973	1128000000
1974	1093000000
1975	1244000000
1976	1198000000
1977	1349000000
1978	1325000000
1979	1582000000
1980	1512000000
1981	1570000000
1982	1198000000
1983	1233000000
1984	1372000000
1985	1687000000
1986	1675000000
1987	1850000000
1988	1872000000
1989	1674000000
1990	2488000000
1991	2722000000
1992	2977000000
1993	2856000000
1994	3010000000
1995	2893000000
1996	3602000000
1997	3632000000
1998	3822000000
1999	3912000000
2000	4281000000
2001	2840000000
2002	3171000000
2003	4440000000
2004	4541000000
2005	4218000000
2006	4169000000
2007	4365000000
2008	4328000000